Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quantos cavalos são mencionados competindo em 1985?
 ###Tabelas: CREATE TABLE double_premiership_teams (double_premiership_teams_id AUTO_INCREMENT PRIMARY KEY, Season INT, Premier VARCHAR, Runner Up VARCHAR, Score VARCHAR, Venue VARCHAR, Attendance INT, Premiership VARCHAR) CREATE TABLE all_winners_of_olympiatravet (all_winners_of_olympiatravet_id AUTO_INCREMENT PRIMARY KEY, Year INT, Horse VARCHAR, Driver VARCHAR, Trainer VARCHAR, Country of owner VARCHAR, Odds of winner VARCHAR, Winning time (km rate) VARCHAR) CREATE TABLE ranking_points (ranking_points_id AUTO_INCREMENT PRIMARY KEY, Finishing position VARCHAR, Points awarded (Platinum) INT, Points awarded (Gold) INT, Points awarded (Silver) INT, Points awarded (Satellite) INT) CREATE TABLE race_6a;_lightweight_manx_grand_prix (race_6a;_lightweight_manx_grand_prix_id AUTO_INCREMENT PRIMARY KEY, Rank INT, Rider VARCHAR, Team VARCHAR, Speed VARCHAR, Time VARCHAR) CREATE TABLE west_indies_in_england (west_indies_in_england_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Home captain VARCHAR, Away captain VARCHAR, Venue VARCHAR, Result VARCHAR)  
SELECT COUNT Horse FROM all_winners_of_olympiatravet WHERE Year = 1985